Kisa (last name withheld) tells TMZ she was driving her Toyota Corolla on Ventura Blvd. in the San Fernando Valley when she was struck by a woman in a black BMW. Kisa tells TMZ she didn't recognize the woman at first -- because she "looked like a hot mess" -- but once they began talking, she realized it was Amanda Bynes.

Kisa says she got out her insurance card to exchange information, but says Bynes "seemed nervous about that." She says Bynes told her the damage to the Corolla didn't look that bad and proceeded to push her bumper back into place (that didn't work, see pic below).

Bynes then, according to Kisa, said they didn't need to exchange info since neither car was damaged badly. Kisa maintains, however, that Amanda's car had "significant" damage to it.

Kisa says she continued to try and exchange info with Bynes, but Bynes just got in her car and drove off.

Kisa tells TMZ she called the police, who responded to the scene and took a hit-and-run report. Kisa says when she told the officer who hit her, the officer replied, "Didn't she just get a DUI?"